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首页> 外文期刊>Nepal Journal of Science and Technology >Climate Change Dry Spell Impact on Agriculture in Salyantar, Dhading, Central Nepal
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Climate Change Dry Spell Impact on Agriculture in Salyantar, Dhading, Central Nepal

机译：尼泊尔中部达丁萨利扬塔的气候变化干法对农业的影响

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Understanding the problem increasingly posed by climatic change is one of the critical challenges of our time. A study was carried out in Salyantar village in Dhading district of central Nepal to understand and assess the extent of climate change impacts on agriculture. The impact assessment was performed through analysis of meteorological data, Landsat images, and people’s perception on changes relative to agriculture sector. Mann-Kendall statistical trend test was used to assign statistical significance to the trend whereas temperature vegetation dryness index (TVDI) was used to identify soil moisture condition as an assessment criterion. The perception of local people on climate change and its impacts was studied through generalized questionnaire survey and participatory rural appraisal. The results of the study portrayed rise in temperature in the study area in the recent years in comparison to the past. The maximum temperature increment was 0.03p C per year. As for precipitation, it showed decreasing trend by 1.855mm per year. The TVDI obtained from Landsat image, showed decreasing trend of soil moisture in different years, which indicate an increased longer dry spell. This has unswerving effect on agriculture as the entire Salyantar village is dependent upon rain-fed agriculture. The perceived impacts on agriculture were decreased crop yield, reduced soil moisture, and increased incidence of new pests and invasive plant species. Such impacts were fairly heterogeneous in distribution. The Salyantar village, a raised flat-land of river deposition already stuck in the grip of water stress, was found exacerbated by the effect of climate change. Nepal Journal of Science and Technology Vol. 16, No.1 (2015) pp.59-68
机译：了解气候变化带来的问题是当今时代的关键挑战之一。在尼泊尔中部达丁区的Salyantar村进行了一项研究，以了解和评估气候变化对农业的影响程度。影响评估是通过分析气象数据，Landsat影像以及人们对农业部门变化的看法来进行的。使用Mann-Kendall统计趋势检验来确定趋势的统计显着性，而使用温度植被干燥指数（TVDI）来确定土壤湿度条件作为评估标准。通过广义问卷调查和参与式农村评估研究了当地人对气候变化及其影响的看法。研究结果表明，与过去相比，近年来研究区域的温度上升。每年的最大温度增量为0.03pC。降水量呈下降趋势，每年减少1.855mm。从Landsat影像获得的TVDI显示不同年份土壤水分的下降趋势，这表明更长的干旱期。由于整个萨利扬塔尔村都依靠雨水灌溉农业，因此这对农业产生了坚定的影响。认为对农业的影响是农作物减产，土壤水分减少以及新的有害生物和外来入侵植物物种增加。这样的影响在分布上是非常不同的。萨利扬塔尔村（Salyantar village）是一处河床抬高的平坦土地，已经陷于缺水压力中，人们发现该村因气候变化的影响而恶化。尼泊尔科学技术学报16，No.1（2015）pp.59-68

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